Steel box arch rib cross node structure of large-span half-through steel box tied arch bridge

The invention discloses a steel box arch rib cross node structure of a large-span half-through steel box tied arch bridge, which comprises a steel box arch rib cross node which is integrally distributed in an X shape, and the steel box arch rib cross node is formed by welding two symmetrically distributed steel box arch rib sections in a cross manner at an acute included angle; the steel box arch rib sections are of a hexagonal special-shaped section hollow steel box arch rib structure. Each steel box arch rib section comprises an arch rib top plate, an arch rib bottom plate and two arch rib web plates, and each arch rib web plate comprises an upper web plate and a lower web plate which are distributed and connected at an obtuse angle; the arch rib top plates of the two steel box arch rib sections share a top plate distributed in an X shape, and the arch rib bottom plates of the two steel box arch rib sections share a bottom plate distributed in an X shape. According to the large-span space steel box arch rib